MILLER, G. S., JR., and G. M. ALLEN 1928. The American bats of the genera _Myotis_ and _Pizonyx_. Bull. U. S. Nat. Mus., 144:viii + 218, May 25, 1928. QUAY, W. B. 1948. Notes on some bats from Nebraska and Wyoming. Jour. Mamm., 29:181-182, May 14, 1948. SIMPSON, G. G. 1945. The principles of classification and a classification of mammals. Bull. Amer. Mus. Nat. Hist., 85:xvi + 350, October 5, 1945. STEPHENS, T. C. 1945. Say's bat in Nebraska. Jour. Mamm., 26:92, February 27, 1945. SWENK, M. H. 1908. A preliminary review of the mammals of Nebraska. Proc. Nebr. Acad. Sci., 8:61-144, 1908. 1915. The birds and mammals of Nebraska. Nebr. Blue Book and Historical Register, pp. 851-855, 1915. 1918. The birds and mammals of Nebraska. Nebr. Blue Book and Historical Register, pp. 407-411, December, 1918. 1919. The birds and mammals of Nebraska. Univ. Nebr. Contrib. Dept. Ent., 23:1-21, March 1, 1919. 1920. The birds and mammals of Nebraska. Nebr. Blue Book and Historical Register, pp. 479-483, December, 1920. TAYLOR, W. P. 1919. Notes on mammals collected principally in Washington and California between the years 1853 and 1874 by Dr. James Graham Cooper. Proc. Calif. Acad. Sci., 9:69-121, July 12, 1919. ZIMMER, J. T. 1913. A northwardly record of the free-tailed bat. Science (NS), 38:665-666, November 7, 1913. _Transmitted, March 27, 1952._ 24-2965 * * * * * Transcriber's Notes Italicized text is shown within _underscores_. Bold text is shown within ~tildes~.